Edward e



July 3, 1928. A

E. E. CLEMENT RADIO METERING SYSTEM Re. 17,023 Y OriginalFle Aug. 14. 1922 eID/OF//ONE @ECE/MEE :Mendez UNITED STA-'r Es PATENT Ericag EDWARD D. CLEMENT, or WASHINGTON, DISTRICT or. continuara,v .assIaNon 'To EDWARD r. coLmD'aY, or WASHINGTON, DIsTaIcToiiI QOLUIIDIA.

reissue led January,

" original Nn. 1,522,359, dated January s,-,19a seria This invention relates to radio systems, --and has `for its object the production of such a. syste-m in which service can be rendered subscribers on a metered basis, as in tele- 5 phone exchange systems. vThis object is'at'- tained by connecting the radio stations with a central station by wire lines, which lmay vbe existing telephone lines, andcausing ythe condition ofl use or disuse of the radio" appar-atus to produce changes in the wire lines Fig. 1 is a 'diagram of a combined wire and radio system equipped'with vindividual station meters at the central-office; and

Fig.` 2 is a fragmentary diagram of a modica'tion.

Referring'vto theA drawiag, A is a ASubsc'ribers statlonA equipped with'teleplione instruments forjtalking and signaling over the line wiresf18-19. A" is the radiophone 'substation of the same subscriber-,Scontaining a radiov receiver, batteries A, and B1, an extension telephone set T-t, controlled by a6 a switch h', and a switch hook'H2 controlling the filament circuit and 'also lacing a ,ground on thetip conductor 18 o the line when the radio receiver is in use. The'ex.- tensions of fline wires 18-19 to the radiolphone 4are controlledl by a cut oil relay L and shunting .condenser g2, said relay being' energized by. line current when the line -i s. in

luse telephonically. Extension wire ,19t is connected to the .bus wire 7 0 of the batter A1, andextension' wire 18 goes to the l switc hook H2 .by which it i's grounded when the radiophone is in use.,l Branch wires 18fand 19" pass from the relay L* as direct continuations of T-t'. Wire 18 goes'tothe 19 goes to the transmitter'T and'thence by wire 77 to the switch h. A- branch wire 19 goes through -a condenser to the Seobroadcasting system such as that -line wires to thetelephonel setinduction coil I4 vand by wire 75v to the switch It', .Wire

nADIo METEDING SYSTEM.

1 No. 581,831, led lAugust 14,1922. Application for 1927. serial' No. i59,4so. e,

ondary of the inductionl coil, thence-tto the illecei-ver -t and by wire' 76v to 'thefswitch containing the 'f'switch h. mitterend of this 'assembly may -then be provided with an eye so thatit may be hung up on the hook H?. Such an assemblage of telephone transmitter-and `receiver is shown for. exam le :in Letters Patent No. 1,382,273, granted une 21, 1921,t0 W. W. Dean.

At lthe central oilice the line lvvire's'lS-.lQ

terminate on multiple jacks J with which cooperate plugs' typified b and 19" are carried to the radio switchboard The instruments T,. t `may` clonven-l iently :be mounted on ai, connecting handle,

I and the trans'- P', for telephonic connections. Multip e wires 18', 19

wire'being continued l.through a back con-l I tact of cut 0H. relay""L" to the bus `bar ofv 'the mainbattery B', while the tip wire is continuedl through a normally open contact of: lthe relay L to the winding of a meter test rela M1', the other side of which isV connecte to the bus "bar of the' battery vIB.- The batteries B and B" are balanced and do not produce an operative -flow of current through the winding Lam of the relay L, due to theline conductor resistance being greaterthan that of the conductr'n'f 19", which is negligible. It is .to be understood also that the batteries B and B are of substantially the samelvoltage, since it is not the battery B but the 'generator Ms which works the meters. The metering` commutator M closes a circuit from `winding of relay L'mv tothe bus -bar of the battery B' periodically, 'at intervals, determined according to the nature of the ,servicel and 'the charge to be made therefor.' lFor example, if a charge of. .ive

cents `is to bemade for every ifteen minutesv of use of the radio receivers at the'substa-l tions, then the meter commutator M2 should make one half rotation every fifteen minutes, and at-the end of4 every such period the relay Lv0 will be energized, and.: relay M' will be supplied with battery current whereby if. thereisa ground on wire-18 at'the radiophone substation, said vrelay M will pull u andl register one unit of time or--one lunit c :arge on the line meter. It will be L and L in this case are indivi ual to the commutator the battery B andthe high understood of course that the rela s M andflo line'and to the substation, but that the meter 'l0 -where they terminate on jack J2, the sleeve 'i will be periods for which no charge should voltage generator Ma for supplying meter current, ma exchange. he relay L is responsive t0 the conimutator M2 only when cut o' relay L is deenergized, and its action is momentary, disabling the cut off relay L6 but `energizin the cut olf relay L on the telephonie switcboard so as to leave the tip side of line clear. If a plug is in any `ack, however, relay L is energized there y as well as relay L3, and relay L is disabled,so that when a line is connected the meter will not re ister.. This is necessary in order tc avoid fa se grounds through the -cord circuits. The meter M shown in Fig. 1 is a standard telephone line meter having one highwinding and one low winding, the high winding being first energized from the' generator Ml when the relay pulls up its armature, the construction of the meter being such. that when its armature is closed against the con-- tact point shown, the high winding vwill be shunted by the low winding, whereby suilcient power to turn the meter ratchet is assured. y

While the wire lines are in use for conversation,v the cut oil' relays Ls land must be energized, and at such times the metering s stem is disconnected for the moment from thetelephone liiie.y Furthermore, as there be made, such ias those in which a program is announced, weather reports are ven, and

'the like, a master switch is provi ed at 100.

for disconnectingthe common metering apparatus. When this switch is' open, any

service rendered willbe free. y When itis desiredto increasethe charac,

as for example for special programs, or vtie like,` the vmetering commutator M" is speeded up accordingly, sothat it Willirecord more units in a given. on they station M. Theadjustment of themetering commutator takes care of this contingency automatically. Todisable the meter circu'it'on an individual line, I provide a switch 101, which may be a single unit, but is indicated in the diagram by separate switch units No. 101 for each A wil-e.` When. open the test relay has no actherefore free.

cess to `the line and any service rendered is It will'be noted that communication be.-

vvtween the operators on -the telephone switchboard and those on the radio switchboard, respecti`vely,is by means of an order circuit or circuits. The reason for this is that the extension 'phones T-t at the radio substation will most frequently be used for access v tothe radio operator, and when a, call of this character is made, vthe answering operator on the telephone switchboard vwill not trunk it through, but will instruct the radio operator over the order circuit, giving the number of the calling line, so that the radio operator may go in on that line by means .of his all be common to the entire '..plug in a jack, the test pairs insulated from the spindle and froml each other. These are rotated by the driven .spindle m around'circular contact banks c c2, c, c, a", c, respectively. lThe bank contacts c, c, and ce are solid rings. extending 'around the circle while the contacts 0', 0,

etc., typify circular series of individual contacts, eachset connected to tap wiresfrom an individual line as indicated. Contact c' is connected to the individual line meter M 'which' is theV sainein every particular as the meter M in Fig. 1, and located the same. Contact c2 is connected to the meter enerator M3; contact c3 is connectedl to t e tip side of line 18 -for test; contact *c* is connected to winding of test relay M', which in this case is common to all the lines and.

For outgoing calls to the radio brought into connection with each in turn as the switch M20 is rotated; contact d is connected .to the wire '19 leading to testl rings of jacks J', Jzaiid to the `ijvinding's of'cut off rel-ay L3; the windings of a sleeve test relay Lw", the other side'of which is connected to battery. 1, The switch rotates only when it is desired to meter the service.

idle and the Wipers m-, m, etc., rest on dead points, so that no linesare connected to them. 4 is driven at such 1 hile metering, the switch speed and at such intervals as the predetermined rate of charge requires, as heretofore explained, and brings line after line under'test to'ascertain if its radio receiving set 1s in service and if so, register a unit charge for each rotation. If aline is not in use telephonically,l and its radio set is in use, when the wipers come on its contacts the relayL will pull up in series with the line cut-off relay La and relay M will get current from battery B through tip side 18 of line to ground at the radio station lswitch hook H2, closing circuit from' meter gener'- ator M3 through contacts m2 meter M.

If the-line is in us'e telephonically,-with a not be actuated. vthis type Vmay also be eni- At other times it is and contact o 4is connected to and-m' tonne will not lbe energized, -12-5' ployed tov connect the radio operator .to the I lines for control, conversation, the place of jacks J z case the operators etc., taking and plugs P3. In such may have dials or key- 12o of the wire 19" by boards for actuating the selective switches,

as well understood in the telephonie art.

In operation, when the radiophone receiver at the subscribers station is in use, the instrument T'tA is lifted o' the switch hook, in order to close the'ilament circuit, and thereby the contacts of the `switch hook Hz'groundthe wire 18" and produce a grounded circuit through to the central office over the tip side of the telehone line as follows: ground at switch ook H2, wire 18, line wire. 18, branch tip conductor 18 at the central ndice, to thev radio switchboard, contacts of relay L, winding of relay M', switch 100, battery B-, and to' ground.A During the program-- period, the commutator M? is continuously operated, and at periodic intervalscloses the' following circuitzbattery B', switch 100, commutator M2, switch 100, switch 101, contacts of relay L, winding of relay 1L to ground. This energizes the relay L, which closes its contacts, and as there: 1s a grounded 'circuit otherwise complete to the windings of relay M', the latterbecomes energized and closes the meter circuit of theparticular line in question, as follows: enerator M, switch 1.00,contacts of rela g'M', to high resistance winding of meter and to round. The meter will start to pull up and before the strain of turning lthe dia becomesapp'arent, its armature will close a short circuit through itsl low resistance winding, whereupon a rush of current will ensue from the generator Ms as follows: Ma', contacts of relay M', windings of M, and

ground, back to generator. The consequent energization is suiiicient to actuate the meter, and record one unit of use.

Whenl the subscriber has finished using his radiophone, he may han up theinst-ruxnent T-t' on the switch vhoo thereby breakingapart the contacts of H2, and taking ,the ground off-the wire 18. Obviously, there eing then nogrounded circuit for the relay M' at central, vthe periodic energization of relayL will produce vno result, and no timefuse will be recorded against the line-V in question. However, it may happen that the subscriberthrough forgetfulness or intent, will leave his switch hook H? in its operative or` grounding position. This would result vin constant metering of time charges against him, `were it not for `the master switches 100, which as heretofore described are ysupposed to be opened during nonradiating eriods. subscriber wou d be charged on y for'actual program periods, even though he left his in-y strument constantly connected for use. -It is known that in ordinary radio ractice, where receiving .instruments f are installed in dpublic places, that theflament circuitsV an the loud speaker circuits are frequenti left closed continuously, but. in such ord1- service, and as I` considerthe app a 'claim the same accordingly, incl:

y Conse uently, the.

nary vpractice there is no '.fneterin'rr o cept as they are used in combinationwith the parts necessary for metering. The tele phone switch board circuits shown herein are standard Western Electric No. i, so known jin the art, and areI equipped with the usual line meters L, which are ener 'figized through the cord circuit by an operd a'tor, whoordinarily applies a high voltage generator to the high winding of the meter to be actuated, and thereupon produces sucient energization to close the circuit of the low winding, which in turn receives a. rush of current from. the main battery and actuates the meter. This is precisely the same as the o ration of the meter M hereinbefore descri ed. It is to be particularly noted that While I have made it possible by the .means disclosed herein to energize ser arate telephone and 'radiophone meters over the same wires, I have .made such sep arate radio meters irresponsiye to any teleV phonic use of the lines 18-19, or the telen .phone switch board circuits .lL-P', er the telephone meters L. At the 'same time, I have rendered it possible to separately. control radiophone meters without interference with any of the aforesaid telephone apparatus, including the telephone meters, and all this I believe to be novel` and original with myselfand shall make it the subject matter of claims accordingly.

The expression a radio central station. vused in the claims-hereinafter is not to be construed as a limitation to a separate radio central station in the sense of a broadcasting or operating station. For example, it may I be. conducted simply as a department of a."

telephone central station.

I claim: 1. A system for'rendering measured itil? lill servicen combination with 4telephone serv f ice, comprising a plurality of subscribers Stations,`a telephone central station, wire lines 'interconnecting them, a radio contrai station 'having access to and means for connecting with said wire telephone lines, a plurality of radio subscribers receiving stations also havin access toy and associated with said wire tetiephone lines, radiol receivf ing apparatus at. each subscribers station, .means controlled in the use of said appa- Y phone apparatus as such.

2. The 'system claimed-'in claiinl, with means to actuatethe central 'station metering means'periodically, to measure time o f The system claimed in 'claim 1, withA i individual station meters'at the central station, and fperiodic'actuating lmeans therefor. 4.-*The system claimedl in:` vc1a'im'1, with l 'variablespeed actuating means for the meters, wherebythe lrate charged Amay be varied according to thecharacter and value ofthe service rendered, by registering more or-less time iinits in a givenv period.V

5. The system claimed in ,claim-1, with kthe wire lines'V connected to telephone appa-v ratus at the subscribers. stations .and to a V telephone.switchboard at the central station, :'means normally, when the lines are tele- -v--phonically idle,.connecting them for lradio use, but actin lto disable the radio connections to inuse telephonicall L v 6. The system claimed in claim I in there aremea'ns'at each substation for start'- the central station v said'meter.

ing'its meter whenrecei-vi for disabling or stopping 7.` A system forrendering-measured `radio service, comprising a central 'statiom'a vp'luf A, rality of substations containing radio re- -ceiving apparatus, a plurality of individual rio meters for saidV substations, means at" each "substation for individually startingl its lrc'eiving" apparatus, a plurality of individual` meter when receiving .radio` matter and.

means .at the central station common tov all f the substations, for disabling` vor sto ping all Vof said meters, whereby periods'o free service Vmay be determinedbyfqthe central Hice exclusive] 8. service, comprising a vcenti-al station, av plurality of Substations containing? radio remeters for saidsubstations, all locatedat the lcentral station, means at each' substason fer individuallywnnang its meer' p 55 for operation, and means at the' central stafv tion for actuating,-'controlling and disabling` said meters individually and collectively.

prises @central station aplurality offsubscribersfstationmrwire'li y them with-'the central station, `a supervisory `scribers receiving stations havin and associated with said. wire use of the tele? nes when the substations. are' which and means at nesinterconnecting` central station, a plurality of broadcast sub-v access to mes, high frequency wave-receivingsand-detecting apparatus at each subscrbers. station, means for relaying the detected Waves from said receiving ap aratus through the wire lines leadiii to t e central station, means controlle lin the. use o`f each receiving apparatus to produce a change in the condition of the wireline leading from its substation to vthe central station, and metering means at the central station responsiveto such changed condition of the lineto register the usey of the substation high frequency appa.. rtus.

10. v A combined system for intercommuni'- eating and for'v measuring and supervising received vbroadcast matter which comprises -a central station, a plurality of subscribers stations, wired circuits ii'iterconnecting the ratus at each subscribers' station, means fr rendering intercommunica-ting service' in` dependent of the broadcast receiving over said'wired circuits, meters associated with 'the respective subscribers .stations for measuring 'such intercommunicating service,

and 4other vmetersseparately controlled bythe Subscribers -for Vseparately metering the broadcastfmatter received at eachv station.

11. A double service system comprising wired circuits, subscribers stations connected therewith, av central station also -connected same with the c entralsta'tion, afsupervisory therewith, means at 'the' central station for rendering service over 4the wires, means at' each.' Subscribers station for receiving and utilizing ,said service, and meters associated with. saidsubs'cribers stations .adapted lto register this primary-use of said circuits, high frequency wave receivingl and detectingapparatus also located at each subv scribersstatiom; an'dother meters associated 51' l `.j witli`-the-severa l subscribers stations, withv A-system or 'rendering measured radio actuating circuits therefor, vand meansv condition'of saidlin'eter 'circuits to register the use ofy thej substation high frequency appa# 'rat'us.

v- '12.` "i-v'fudouble L service comprising circuits', subscribev vstations connect edtherewith, a central station "also connected therewith, meansat jthe .central station for 9. 'Ajsystem for measuring and supervising received broadcast matter' which com- 'rendering service over vthe wii'es ,1meansl at with said subscribers* stations .adapted to 1 register this` primary use of said circuits, stationhaving asces's'to and means' for, con` nectingwith said lines through high y frequency wave-receiving' and v'detect- [los vum'subseries high fr l said first 'setof meters ers station, arid-other associated the 'several'subscribers stations, with act-v atingcircuitstherefor, and means controlled f in the use offsaid high frequenc apparatus onl 'to lproduce fa'change' in the con ition f sai .'.m'eter-'circuits to register Athe use of uency apparatus, mg irresponsive to any changeproduced by the use of high frequenc ap aratus at the subscribers station, an sai ,second set of meters being ir-l 'responsive'to any primary use of the wiresby the subscribers.

13. A system v.for measuring and supervising receiyedfbroadcast matter whichscomfrises a plurality of subscribers stations, a ow frequency fcentral station, wire circuits interconnecting them, means at said central 1 station for supplying primary -service to said. subscribers stationsv over said wiredicircuits, and'means for metering the same, a 'high frequencycentral station havin access Kto and means for Aconnecting with' sai wired circuits a. plurality of high frequency .Wave

- 'receivingand detecting apparatus at subscribers stat-ions, and metering means therefor, toglether with means operable in the use oft e respective lo'w frequency and high frequency service, to differentially and separately operate said low frequency metering means and said hi h fr uenc meterin e ot er, accor 14; "A system for measuring and supervising received broadcast matter which com,

interconnecting them, means at said central 4station for' supplying primary service to -said subscribers stations over said wired circuits, and means for metering the' same, a

high frequency central station havin access to and means for connecting with sai wired circuits a plurality of high frequency wave receiving and detecting apparatus at sub,-` `"scribers stations, and metering-means there- Vfon-said low frequenc metering means be- 'ing controlled at the ow frequency central station, and the highfrequencyy metereiig'j means being .controlledyby'the subs differentially and exclusively.

15.Y A systemtion, a pluralityv of substationsandiiwired circuitsinterconnecting thesaine,` double service mechanical andelectrical equi ment adapted for low frequency aiidfor hig frequency communication respectively v at `each lyinetering the high frequency and the low for vmeasuring f- .received broadcast matter ,comprising amlcent 's .i

V signature. substation, and se arate means for separatei' frequency communications without interference.,

16. A duplex measuring service system comprising a `central station, subscriber stations, and wire lines interconnecting the same, withmeans for furnishingtwo-distinct and separate classes of serviceover the said circuits in` common and other. means separately identified `with each circuit of eachlme for metering a use of saidv circuit by the subscriber.

17. The method of rendering a plurality i of diverse measured services over the same wired circuits which consists in operating one service at high frequencies and another service at low frequencies, and identifying separatemetering devices with each. class of operation, one set beingactuatedin the high frequenc operation only andthe other s et of meters being lactuated lin the low frequency operation only.

18. Ina metering system, a plurality of lines and substations, a central station-containing terminals of said lines, and vautov matic switching devices adapted to ,be icontinuously' driven around over the contacts of the respective lines, metering means associated with the several linesand-connected.

to contacts in said switch identified with the line contacts, and! automatic means con-l trolled by each subscriberl for energizinghis line meter each time 'that the switch comes into selective association with his line contacts so long as his line remains in use-` 19. A metering system com rising sets of bank contacts associated wit -line circuits leadingto substatibns, and mov-able contacts successively engaging said sets ofvbank' con- Y relay therefor andi-testing or identifying means, `said moyable contacts beingcommon to -.a grou of lines, j and means whereby the f meter wil be actuated each time said mov-V' able contacts make a cycle of operation while- --its line'fi'isfin use whereby the time'use of each-'line"'wi11 be metered in units measured bE-ifthelperiodicityof movement of the mov-v a v f' e. yj contacts.

,20. A-metering system for-wired circuits.' adapted by multiplexing for diiferent classes of service, comprising .meters diiferentially-` identified with whatever classes of service for; they same lines respectively and subscriber controlled selective `means, for differentiall actuating said meters in accordance with t e class of service to be metered.

EDWARD E; CLEMENT.

In testimony whereofl hereunto aiiii: my i 

